#### Answer

-11/72

#### Work Step by Step

In order to add or subtract fractions, we start by making a common denominator (bottom of the fraction). Thus, we multiply 1/24 by 3/3 and 7/36 by 2/2 to obtain:
$\frac{3}{72}$-($\frac{14}{72}$)=-$\frac{11}{72}$